M*A*S*H is an American media franchise consisting of a series of novels, a film, several television series, plays, and other properties, owned by 20th Century Fox and based on the semi-autobiographic fiction of Richard Hooker.

The franchise effectively ended with the conclusion of Trapper John, M.D. on September 4, 1986. A large fanbase for the series exists, and 20th Century Fox has had notable success selling the film and seasons of the TV series on DVD.

Trapper John, M.D. featured the character of Trapper John McIntyre, played by Pernell Roberts, twenty-eight years after the events of the M*A*S*H film and television series. It was the first spin-off to feature a character from the series in civilian life after the war. Legally, Trapper John, M.D. is a direct spin-off of the MASH film rather than the television series due to licensing issues. The pilot episode briefly shows a photograph of Rogers and Alda.

W*A*L*T*E*R was the pilot for a television series that was not picked up. It would have featured Gary Burghoff reprising the role of Walter O'Reilly. The pilot was shown as a "CBS Special Presentation" on July 17, 1984.

In 1973 a play by Tim Kelly, based on the book, television show and movie, was published in both one-act and full versions.[3][4] The play incorporates many of the characters but omits more of the dark comedy aspects. It is occasionally produced by community theater and high school theater companies.

The crew from the M*A*S*H series appeared in advertising for IBM products, such as the PS/2 line that introduced the PS/2 connector for keyboards and mice.

Fox developed a M*A*S*H video game that was released for the Atari 2600, Atari 8-bit computers and the Texas InstrumentsTI 99/4A.[5] Players alternate between controlling a helicopter picking up wounded soldiers from the front and a surgeon removing shrapnel from a soldier, similar to Microsurgeon. InfoWorld called M*A*S*H "the exception" among the TI 99/4A's generally poor game library.[6]